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Search results “Bitcoin block format”
Bitcoin - Transaction block chains
 
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The mechanics of a bitcoin transaction block chain, which is a construct that is generated by bitcoin miners and functions as a global ledger for recording and validating bitcoins. More free lessons at: http://www.khanacademy.org/video?v=QzDO44oZWtE Video by Zulfikar Ramzan. Zulfikar Ramzan is a world-leading expert in computer security and cryptography and is currently the Chief Scientist at Sourcefire. He received his Ph.D. in computer science from MIT.
Views: 209813 Khan Academy
How Bitcoin mining actually works - What is the "cryptographic puzzle"?
 
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In this video I try to breakdown the "cryptographic problem" that people reference when they talk about bitcoin mining. 13uJjYF12aRVdwaiTmALx5XDfguQ9MnYtK
Views: 62376 Keifer Kif
Blockchain/Bitcoin for beginners 6: blocks and mining, content and creation of bitcoin blocks
 
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In this video we introduce the basic concepts behind how new blocks are created in the Bitcoin blockchain. We start by taking another look at the blockchain.info website to see some sample blocks and then to a quick screencast explaining how new, unconfirmed transactions are collected by mining nodes and included in new transaction blocks, whose header needs to be hashed along with a random number to produce an output hash meeting a set requirement. I mention that the requirement is that the generated hash starts with a specified number of leading zeros...this is a slight (and very common) simplification, the reality is that the hash must be LESS than or equal to a specic 256 bit binary number. See here: https://youtu.be/4QxOUwG8a2Y I introduce the concepts of difficulty targets and validation of blocks
Views: 10010 Matt Thomas
Building a Blockchain in Under 15 Minutes - Programmer explains
 
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I wanted to demonstrate that the concept of a blockchain that powers almost all of the modern cryptocurrencies is very simple at its core. Bitcoin, Ethereum, Litecoin etc all are based on this blockchain technology. Many people think that the blockchain is a complicated thing while at it's core its just a clever use case of hashes. Enjoy guys! CODE: https://github.com/ivan-liljeqvist/SimpleBlockchain JOIN MY EXCLUSIVE MAILING LIST FOR EVEN MORE BLOCKCHAIN KNOWLEDGE: http://eepurl.com/c0hyc9 ESSENTIAL CRYPTO RESOURCES Hardware wallets: ♥ TREZOR https://trezor.io ♥ LEDGER NANO S https://www.ledgerwallet.com/r/4607 To buy cryptocurrencies: ♥ Coinbase https://www.coinbase.com/join/529bab0ab08ded7080000019 JOIN SLACK COMMUNITY http://slack-invite-ivan-on-tech.herokuapp.com https://steemit.com/@ivanli
Views: 386445 Ivan on Tech
Blockchain 101 - A Visual Demo
 
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This is a very basic visual introduction to the concepts behind a blockchain. We introduce the idea of an immutable ledger using an interactive web demo. Part 2 is here: https://youtu.be/xIDL_akeras If you are interested in playing with this on your own, it is available online at: http://anders.com/blockchain/ The code that runs this demo is also on GitHub: https://github.com/anders94/blockchain-demo I'm @anders94 on Twitter and @andersbrownworth on Steemit. Donations: BTC: 1K3NvcuZzVTueHW1qhkG2Cm3viRkh2EXJp ETH: 0x84a90e21d9d02e30ddcea56d618aa75ba90331ff ETC: 0xab75ad757c89fa33b92090193a797e6700769ef8
Views: 928814 Anders Brownworth
Creating a blockchain with Javascript (Blockchain, part 1)
 
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Learn how to write your own Blockchain with JavaScript. In this video I'll show you what is behind a blockchain by using simple code. It's not a complete implementation, but enough to understand how blockchains work and how they guarantee that blocks can never be changed. After creating our blockchain we'll try and tamper with it. This will demonstrate a blockchains ability to detect fraud. Next video (implementing proof-of-work): https://youtu.be/HneatE69814 💰 Want to buy Bitcoin or Ethereum? Buy for $100 and get $10 free (through my affiliate link): https://www.coinbase.com/join/59284524822a3d0b19e11134 ► Source code Available on GitHub: https://github.com/SavjeeTutorials/SavjeeCoin ► About me 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be ✉️ Subscribe to newsletter: https://goo.gl/nueDfz 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Blockchain/Bitcoin for beginners 7: Blockchain header: Merkle roots and SPV transaction verification
 
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How are transactions stored (and recorded) in the Blockchain blocks? Using a concept called a Merkle tree - in this video I break it down in depth with a simple example and show how a SPV node (Simple Payment Verification) node that does not keep a full copy of the blockchain transaction history - just the headers of the blocks - can verify from an adjacent (but not necessarily trusted) full node, which block a transaction is part of just from knowing the MERKLE PATH from the full node. http://chimera.labs.oreilly.com/books/1234000001802/ch07.html
Views: 12222 Matt Thomas
How Bitcoin Works in 5 Minutes (Technical)
 
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A short introduction to how Bitcoin Works. Want more? Check out my new in-depth course on the latest in Bitcoin, Blockchain, and a survey of the most exciting projects coming out (Ethereum, etc): https://app.pluralsight.com/library/courses/bitcoin-decentralized-technology Lots of demos on how to buy, send, store (hardware, paper wallet). how to use javascript to send bitcoin. How to create Ethereum Smart Contract, much more. Written Version: http://www.imponderablethings.com/2014/04/how-bitcoin-works-in-5-minutes.html Less technical version: https://www.youtube.com/watch?v=t5JGQXCTe3c Donation address: 1K7A6wsyxj6fThtMYcNu6X8bLbnNKovgtP Germain caption translation provided by adi331 : 19s6rqRfHa19w7wcgwtCumPs1vdLDj1VVo (thanks!!)
Views: 5642911 CuriousInventor
Blockchain 101 Ep 24 - How to mine Bitcoin
 
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Bitcoin is produced through mining. Every 10 minutes, miners compete to solve a complex math problem. Whoever finds the answer first, mines the block, and receives Bitcoins as a block reward. In early days, mining can be done using CPUs. However, with the increasing number of miners, CPUs are no longer powerful enough to mine Bitcoins, and people turned to mining rigs. To start mining, you need to prepare mining rigs, Bitcoin address, mining software, etc. Currently, the computing power required is too high, solo miners find it hard to get a block reward. Hence, many miners join a mining pool to do it together, miners are only responsible for providing the computing power, and the mining pool processes the transactions. When the pool receives Bitcoins, it will distribute to miners based on their contributions ensuring a stable rate of return. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 679 Huobi Global
Mining Bitcoin with pencil and paper
 
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Bitcoins are mined using a cryptographic algorithm called SHA-256. This algorithm is simple enough to be done with pencil and paper, as I show in this video. Not surprisingly, this is a thoroughly impractical way to mine. One round of the algorithm takes 16 minutes, 45 seconds which works out to a hash rate of 0.67 hashes per day. For details, see http://righto.com/sha
Views: 1185251 Ken Shirriff
(Audiobook) The Original Bitcoin White Paper by Satoshi Nakamoto
 
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Donations greatly appreciated! Bitcoin: 1KdkeDArSd5LVaLVh9WePaHqB9yHLaKPfv I worked very hard to create this interactive audiobook format and graciously appreciate Bitcoin donations. After wanting to read the original Bitcoin Whitepaper, I discovered there wasn't a good audiobook version of it with graphs and formulas. So I went ahead and made it, using a slower reading speed so a viewer can try and take it all in. I have no affiliation with bitcoin.org or Satoshi Nakamoto. Download the original whitepaper here. http://bitcoin.org/bitcoin.pdf From wikipedia.... In November 2008, a paper was posted on the internet under the name Satoshi Nakamoto titled Bitcoin: A Peer-to-Peer Electronic Cash System. This paper detailed methods of using a peer-to-peer network to generate what was described as "a system for electronic transactions without relying on trust". In January 2009, the Bitcoin network came into existence with the release of the first open source Bitcoin client and the issuance of the first bitcoins, with Satoshi Nakamoto mining the first block of bitcoins ever (known as the "genesis block"), which had a reward of 50 bitcoins. The value of the first bitcoin transactions were negotiated by individuals on the bitcointalk forums with one notable transaction involving a 10,000 BTC pizza. "Satoshi Nakamoto" is a pseudonym for the unknown person or people who designed the original Bitcoin protocol in 2008 and launched the network in 2009. Nakamoto was responsible for creating the majority of the official Bitcoin software and was active in making modifications and posting technical information on the BitcoinTalk Forum.[73] I apologize in advance for the few wording mistakes. I tried to notate most of them.
Views: 41157 Bitcoin WhitePaper
Bitcoin/Altcoin Developer Guide - 2 - Block Headers and Their Contents
 
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In these tutorials I teach you how become a bitcoin/altcoin developer. I will be going through the entire bitcoin developer reference and in each tutorial I will explain one or more key concepts involving bitcoin and altcoins. Bitcoin Stack Exchange https://bitcoin.stackexchange.com/ Developer reference https://bitcoin.org/en/developer-reference Source Code for Bitcoin: https://github.com/bitcoin/bitcoin Installation guide for Bitcoin Core on Unix: https://github.com/bitcoin/bitcoin/blob/master/doc/build-unix.md Installation guide for Windows: https://github.com/bitcoin/bitcoin/blob/master/doc/build-windows.md
Views: 223 Oscar Chambers
Blockchain 101 Ep 12 - How does Bitcoin control its supply
 
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Bitcoin is a virtual currency designed for deflation, with total supply cap of 21 million. Why? When designing Bitcoin, Satoshi set each Bitcoin to be divisible to 0.00000001. The block reward was 50 Bitcoins, and such reward will be halved every 210,000 blocks. If a new block is generated every 10 minutes, it will take around four years to mine 210,000 blocks. Since 2009, the block reward has been halved twice, the block reward is currently 12.5 Bitcoins. Around Year 2045, 99.95% of Bitcoins will be issued, and the last Bitcoin would be mined in the year 2140, reaching the total supply of 21 million. (Note: The actual figure is 20999999.97690000) The fundamental soundness of Bitcoin’s deflationary nature has caused quite a debate among economists, but this mechanism has encouraged miners to start sooner than later, which provides processing power and security to the network. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, first 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 1144 Huobi Global
Bitcoin Mining Complete Guide & Tutorial (EASIEST METHOD Working 2018)
 
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Video tutorial/guide showing how to start mining Bitcoins from home super simple and easily, for beginners, or advanced users, using NiceHash. Bitcoins are a cryptocurrency, like Litecoins and Ethereum which offer an anonymous form of digital currency. This video will show you how to setup a bitcoin wallet, download and install the mining program (nicehash), link it up to your wallet using the bitcoin address, and use the optimal algorithm for mining the most bitcoins and earning the money. Mining these Bitcoins is a way to introduce new bitcoins into the world, as well as verify transactions occurring in the blockchain. You can earn bitcoins and money, by mining at home from your very own PC computer. I also include some tips which helped me mine! If you're interested in learning about EVERYTHING you need to know about security, privacy, and anonymity--check out Go Incognito, a free and in-depth course taking you from start to finish: https://www.youtube.com/playlist?list=PL3KeV6Ui_4CayDGHw64OFXEPHgXLkrtJO Techlore Website: http://www.techlore.tech My Video Equipment (Affiliate Link): https://www.amazon.com/shop/influencer20170928875 Instagram: @techlemur Discord: https://discord.gg/sdMv9Zj Minds: https://www.minds.com/Techlore DTube: https://d.tube/#!/c/techlore Telegram Channel: https://t.me/techloreofficial Telegram Group: https://t.me/joinchat/IJOwYA3mr-PoGnp7m35rmA *ATTENTION* Nicehash has updated their program and the UI is very different from this video. I made an updated video so you can all follow along. Here is the link. Use the new program with Nvidia Cards: UPDATED VIDEO: https://www.youtube.com/watch?v=XnAjCMb_uEg Coinbase Link: https://www.coinbase.com/join/5942e0b5d26ede03db311893 NiceHash Link: https://www.nicehash.com/?p=nhmintro You should mine with a powerful Graphics Card (GPU), and only on desktop computers (Not laptops). You need a bitcoin wallet like Coinbase, and you will need NiceHash. Make sure to benchmark your algorithms to get the most amount of bitcoins. Bitcoin mining is the process of adding transaction records to Bitcoin's public ledger of past transactions or blockchain. This ledger of past transactions is called the block chain as it is a chain of blocks. The block chain serves to confirm transactions to the rest of the network as having taken place. Bitcoin nodes use the block chain to distinguish legitimate Bitcoin transactions from attempts to re-spend coins that have already been spent elsewhere.
Views: 275179 Techlore
Tracking Bitcoin Transactions on the Blockchain - SANS DFIR Summit 2017
 
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Bitcoins are a commonly-used currency among cyber criminals for exchanging goods and services and receiving payments from ransomware. While cryptocurrency claims to promote anonymity, the nature of the blockchain’s public ledger means that criminal activities can be traced and correlated. This presentation will cover a brief high-level overview of how transactions on the blockchain work and will focus on how to apply this knowledge in order to both manually and automatically map out transactions, associate bitcoin addresses, and identify potential cybercriminal-owned bitcoin wallets with the goal of providing context to the scale and duration of a campaign impacting your enterprise. Examples will include identifying a Locky affiliate’s infrastructure, attributing the Shark/Atom ransomware, and identifying “bitcoin exchanges” on the blockchain. Kevin Perlow, Associate, Booz Allen Hamilton
What Bitcoin Miners Actually Do
 
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Blockchain explorers: blockchain.info, blockr.io, blockexplorer.com To do a SHA 256 on a string of text: http://www.xorbin.com/tools/sha256-hash-calculator To do a SHA 256 on a file: https://md5file.com/calculator My Medium Post that I used to make this video: https://medium.com/@TheAlexGalaxy/what-bitcoin-miners-actually-do-bc80185c0e52#.91ac9ld9h
Views: 101237 Alex Millar
Blockchain 101 Ep 15 - How do Bitcoin transactions work
 
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We all have individual bank accounts, facilitating the transfer of money between individuals. Similarly, a Bitcoin transaction is the transfer of Bitcoins from one Bitcoin address to another Bitcoin address. If you want to send Bitcoin to someone else, you’ll need to enter your Bitcoin address, receiver’s address, amount and transaction fee details in your Bitcoin exchange, wallet or your client interface. Once the details are confirmed, the information will be announced and shared within the Bitcoin network. Every 10 minutes, miners will collect and process all the pending transactions into a new block, marking the completion of one confirmation. Till this point, the Bitcoin has already arrived in the receiver’s address. Nowadays, it takes more than six confirmations to make sure the transaction is valid and considered to be complete. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 1562 Huobi Global
Bitcoin Internals: How Blocks use Merkle Trees in JavaScript
 
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In this video I take a look into how Bitcoin internally uses Merkle trees to generate it's block Merkle roots. We delve into how this is computed and why it is so important to validate the state of transactions. We then move on to create a simple script in JavaScript that computes the Merkle root of a given block's transactions, and verifies this with the value stored within the block. Discussed in the video: - https://www.bitcoinbook.info/ - https://bitcointalk.org/index.php?topic=45456.0 - https://bitcoin.stackexchange.com/questions/2063/why-does-the-bitcoin-protocol-use-the-little-endian-notation The source-code for this video can be found here: https://gist.github.com/eddmann/0af11a2436202cd994ecf73f70d49674
Views: 1213 Edd Mann
Blockchain - How To Verify A Bitcoin Transaction And Get Your Hash ID
 
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For more tips like these visit http://bodymindsuccess.com/bitcoin or subscribe to our channel
Views: 54159 Crypto Currency Wealth
Mining Bitcoin with Excel
 
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Learn how to mine Bitcoin with an Excel spreadsheet. Check out the following video for info on 21's Bitcoin computer, which can actually be used to mine Bitcoins and monetize your endpoint: https://youtu.be/mLwbBojDD_U In this video, we explain the algorithm behind Bitcoin mining and show you how you could (in theory) do it yourself! Download the spreadsheet here: https://www.dropbox.com/s/2erhq2uum7fvdc2/Bitcoin.xlsx?dl=0 See more at www.knowledgevideos.net The algorithm is from Jersey: 13GFWmp4HWdidJaTxWHCcaHPrqBPfddDHK NIST SHA-256 Description: http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
Views: 169168 Knowledge
A primer to Bitcoin and the Blockchain | Adam Winter | TEDxColumbus
 
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Adam Winter, CTO of Clarus Solutions, is a technologist with an eye on future trends. Virtually every transaction comes with an intermediary involved. He describes the technology behind Bitcoin, a prominent cryptocurrency that operates without a financial intermediary and the future technology of the blockchain which will enable a wide range of peer-to-peer applications without intermediaries. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
Views: 9310 TEDx Talks
How to install and run a Blockparser for the Bitcoin Blockchain?
 
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In this video we will install and run a blockparser(on linux) for the bitcoin blockchain. I used this blockparser for various projects and it works really well. Links & commands: How to run a Bitcoin Full Node on Linux: https://youtu.be/0qiLk6bvt4w Blockparser: https://github.com/gcarq/rusty-blockparser $ bitcoin-cli getblockchaininfo $ curl -sSf https://static.rust-lang.org/rustup.sh | sh $ cargo install rusty-blockparser $ mkdir dump $ rusty-blockparser -t 3 csvdump ~/dump/
Views: 273 Coding with Canbo
How to find the transaction ID in your Blockchain.info Bitcoin wallet
 
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Do you send Bitcoins from your Blockchain.Info wallet? Do you often get asked to send the "Receiver/Recipient" the proof of payment, especially the Hash/Transaction ID..?? In this short video, I show you how to find the transaction ID for a "Send" transaction, from your Blockchain.Info Bitcoin wallet. If you need any more info on Bitcoin, you can comment below, and I'll get back to you. Cheers, Hugh
Views: 29286 Hugh Broodryk
Pegar Hex de Transação Bitcoin   Get Hex Format Bitcoin
 
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Tutorial com pegar o formato HEX de uma transação na Blockchain. O Processo é simples, pegue hash de sua transação e digite na barra de endereço ?format=hex -O Formato hex da transação sera exibido. -------------------------------------------------------------------------------- Exemplo: -Hash sem o codigo https://blockchain.info/pt/tx/8076e9397a6621ea2a2be67b98e6c0a4fb7c9d0db9525c28536744d94decf71?format=hex -Hash com o codigo https://blockchain.info/pt/tx/8076e9397a6621ea2a2be67b98e6c0a4fb7c9d0db9525c28536744d94decf713?format=hex
Views: 139 É Hora do Trade
Blockchain/Bitcoin for beginners 3: public/private keys, signatures... and first ever transaction
 
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Detailed overview of public/private key encryption and live demo of exactly how digital signatures work on Mac, combining public and private keys and hash functions. Welcome to episode 3 of my series on Blockchain/Bitcoin. I'm joined once again by my girlfriend Nadisha who is my classroom pupil... I build on the hash function concepts from the previous episode and explain the basic concepts public and private keys and how to use them to create digital signatures - a key part of the bitcoin infrastructure. We demonstrate in a Mac terminal how you can generate your own keys and encrypt and decrypt and sign your own resources - learning by doing always works. We touch on bitcoin addresses, what they represent and how they are created. Finally I go back for a refresh of the bitcoin blockchain browser and look at the first ever bitcoin transaction in the "Genesis Block" to show what a real bitcoin address looks like. Bitcoin Blockchain browser https://blockchain.info Online hash calculator - great way to practice and familiarise with hash functions - one of the most important building blocks of Blockchain/Bitcoin http://www.fileformat.info/tool/hash.htm Course to date (previous videos) 1. Blockchain introduction https://youtu.be/xwA2TkcAQgQ 2. Hashing, blockchain networks and look at blockchain browser https://youtu.be/oxwMnqFNq9M SAMPLE COMMANDS: You will need to use your own document - pick any document, obviously your hash values will be different to mine. Also I had to use (right arrow) - since comments do not allow "chevron" symbols # EXAMPLE 1: # generate public and private keys openssl genrsa -out mykey 2048; cp mykey privatekey; openssl rsa -in mykey -pubout -out publickey; rm mike #encrypt with public key echo “the cat sat on the mat” | openssl rsautl -encrypt -pubin -inkey publicly (right arrow) cipher.txt # show the garbage cat cipher.txt # decrypt with private key - The cat sat on the mat cat cipher.txt | openssl rsautl -decrypt -inkey privately # EXAMPLE 2: Sign Alice in wonderland #check the SHA256 hash of the document to send - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 # create a text file called signature which hashes the document and encrypts with private key shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 | openssl rsautl -inkey privatekey -sign (right arrow) signature # wrap the signature up with the public key, the document and the signature and send it … we just copy to another folder tar -cvf alice.tar signature alice-in-wonderland.txt publickey;mkdir -p inbox;cp alice.tar inbox;cd inbox;tar -xvf alice.tar # inspect the public key and verify with the sender that it belongs to the sender cat publickey #decrypt the signature with the received public key - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c openssl rsautl -inkey publickey -pubin -in signature # hash the received document - d9db7b8984d808b2821070cc6cc76e4415229d3356452b2a0f06ec3608f13b6c shasum -a 256 alice-in-wonderland.txt | cut -d" " -f1 # if they are both the same then the document cannot have been changed since it was signed by the genuine owner of the # private key corresponding to the public key
Views: 19361 Matt Thomas
Blockchain tutorial 27: Bitcoin raw transaction and transaction id
 
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This is part 27 of the Blockchain tutorial. This tutorial explains: - What Bitcoin raw transaction is. - Shows an example of a raw transaction using the very first transaction on the Genesis block. - What the difference is between big endian and little endian. - What a satoshi is. - What a Bitcoin transaction id or hash is and what its purpose is. - How to calculate the transaction id. In this video series different topics will be explained which will help you to understand blockchain. Bitcoin released as open source software in 2009 is a cryptocurrency invented by Satoshi Nakamoto (unidentified person or group of persons). After the introduction of Bitcoin many Bitcoin alternatives were created. These alternate cryptocurrencies are called Altcoins (Litecoin, Dodgecoin etc). Bitcoin's underlying technology is called Blockchain. The Blockchain is a distributed decentralized incorruptible database (ledger) that records blocks of digital information. Each block contains a timestamp and a link to a previous block. Soon people realises that there many other use cases where the Blockchain technology can be applied and not just as a cryptocurrency application. New Blockchain platforms were created based on the Blockchain technology, one of which is called Ethereum. Ethereum focuses on running programming code, called smart contracts, on any decentralized application. Using the new Blockchain platforms, Blockchain technology can be used in supply chain management, healthcare, real estate, identity management, voting, internet of things, etcetera, just to name a few. Today there is a growing interest in Blockchain not only in the financial sector but also in other sectors. Explaining how Blockchain works is not easy and for many the Blockchain technology remains an elusive concept. This video series tries to explain Blockchain to a large audience but from the bottom up. Keywords often used in Blockchain conversation will be explained. Each Blockchain video is short and to the point. It is recommended to watch each video sequentially as I may refer to certain Blockchain topics explained earlier. Check out all my other Blockchain tutorial videos https://goo.gl/aMTFHU Subscribe to my YouTube channel https://goo.gl/61NFzK The presentation used in this video tutorial can be found at: http://www.mobilefish.com/developer/blockchain/blockchain_quickguide_tutorial.html The 3 links mentioned in the video are: - The bitcoin_genesis_raw_tx.txt file http://www.mobilefish.com/download/cryptocurrency/bitcoin_genesis_raw_tx.txt - The Bitcoin protocol: https://en.bitcoin.it/wiki/Protocol_documentation#tx - The block explorer used in the video: https://blockchain.info/ The python script to calculate the transaction id: http://www.mobilefish.com/download/cryptocurrency/calculate_txid.py.txt The brainwallet tool to convert the raw transaction into a more readable text: http://www.mobilefish.com/services/cryptocurrency/brainwallet.html #mobilefish #blockchain #bitcoin #cryptocurrency #ethereum
Views: 5484 Mobilefish.com
Dev++ 01-03-EN | Bitcoin Peer-to-Peer Network - John Newbery
 
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John Newbery covers the primitives and functionality that comprises Bitcoin peer-to-peer network. This includes types of nodes that comprise the network, message format, control messages, transaction and block propagation, mempool, fee estimation, compact blocks etc. For additional information, please visit http://bitcoinedge.org
Views: 526 Bitcoin Edge
Blockchain 101 Ep 16 - What's the fee for Bitcoin transactions?
 
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Bitcoin transaction fees give Bitcoin miners an incentive to include transactions into their blocks and provide sufficient hashing power, securing the Bitcoin network. Some also call it “miner fees”. When making a transaction over the Bitcoin network, one usually pays for miners to facilitate the transaction. The fee tends to be around 0.0001-0.0015 Bitcoin. Block sizes are limited and can only support limited number of transactions. Therefore, miners will prioritize transactions that pay higher fees. A higher fee means the transaction can be processed sooner. This raises the threshold of making Bitcoin transactions and also effectively protects the blockchain from spams while ensuring miners still have the incentive to maintain the Bitcoin network even after all the Bitcoins are mined. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 822 Huobi Global
Learning Bitcoin 4 - Bitcoin Code Exploration - Block - Part 1
 
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Learning Bitcoin 4 - Bitcoin Code Exploration - Block - Part 1
Views: 709 Experience&Embrace
How to get Hash ID or transactioin receipt of bitcoin on Blockchain.info
 
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Video tutorial on how to get the hash id transactions of bitcoins.
Views: 26588 Cesar Salaum Jr.
How does a blockchain work - Simply Explained
 
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What is a blockchain and how do they work? I'll explain why blockchains are so special in simple and plain English! 💰 Want to buy Bitcoin or Ethereum? Buy for $100 and get $10 free (through my affiliate link): https://www.coinbase.com/join/59284524822a3d0b19e11134 📚 Sources can be found on my website: https://www.savjee.be/videos/simply-explained/how-does-a-blockchain-work/ 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be ✉️ Subscribe to newsletter: https://goo.gl/nueDfz 👍🏻 Like my Facebook page: https://www.facebook.com/savjee
Views: 2531276 Simply Explained - Savjee
Blockchain 101 Ep 23 - What is mining?
 
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Mining is validating transactions initiated in the Bitcoin network within a timeframe, updating and adding new blocks on the blockchain. Those who mine are called miners. Simply put, mining is a bookkeeping process where miners are the bookkeepers and blockchain is the ledger. What motivates miners to keep mining? Bitcoin adopts a “distributed updated system” where every miner competes for the right to update the ledger. The one who gets to update the ledger in the new block will receive newly generated Bitcoins as a reward. Therefore, mining generates Bitcoins. Initially, Satoshi designed the system such that after every 210,000 blocks, the Bitcoin block reward will be halved, until it reaches the smallest fraction of one Bitcoin. Hence, Bitcoin has a supply cap, similar to gold. Hence, people often call Bitcoin “digital gold” and its creation process, “mining”. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 672 Huobi Global
What is Bitcoin Mining?
 
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For more information: https://www.bitcoinmining.com and https://www.weusecoins.com What is Bitcoin Mining? Have you ever wondered how Bitcoin is generated? This short video is an animated introduction to Bitcoin Mining. Credits: Voice - Chris Rice (www.ricevoice.com) Motion Graphics - Fabian Rühle (www.fabianruehle.de) Music/Sound Design - Christian Barth (www.akkord-arbeiter.de) Andrew Mottl (www.andrewmottl.com)
Views: 6714432 BitcoinMiningCom
Blockchain 101 Ep 11 - Why haven't we finished mining Bitcoins
 
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For sustainability, the Bitcoin network adjusts its mining difficulty. Every 10 minutes, miners compete to solve a complex math problem to create the next block for Bitcoin rewards. If the processing power of the Bitcoin network keeps increasing, we will finish mining all Bitcoins in no time. To maintain the rate of new block generation at once every 10 minutes, Satoshi Nakamoto has designed the system to adjust the mining difficulty every two weeks, every 2016 blocks. As such, the adjusted difficulty will keep the new block generation rate at the expected time frame of 10 minutes. Currently, the difficulty is set at 480PH/s, about 68 billion times harder than mining the genesis block. That means, based on the current computing power, all miners need to perform 300 sextillion(3*10^23)hashes to find the right answer to mine the new block. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, first 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 1011 Huobi Global
Blockchain 101 Ep 20 - What happens after I initiate a Bitcoin transaction?
 
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When you initiate a Bitcoin transaction, the information is broadcasted to the whole network, after mining nodes receive the information, they will store it in a local pool for some basic validations, such as checking for double spending. If it’s valid, it will then be moved to the pool of “Unconfirmed Transactions” for processing. If it fails, this transaction, marked as an “Invalid Transaction”, will not be processed. This means mining nodes are not only competing with their hashing power, but also validating transactions promptly to update their pool of “Unconfirmed Transactions.” After obtaining the right to update the ledger, miners will take around 1000 transactions from the “Unconfirmed Transactions” pool to process. Sometimes our transaction may not be processed in time, due to an overwhelmingly number of unconfirmed transactions and each block can only record a limited number of transactions. Watch the video here! Huobi Pro will post a question in our Tweet via our Twitter account (https://twitter.com/Huobi_Pro) each time we put up an episode of Blockchain 101 post on our Twitter account, we will randomly select 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. What are you waiting for? Fastest fingers first! Grab your HT now!
Views: 615 Huobi Global
From Bitcoin to the Internet of Value | Diego Gutiérrez Zaldívar | TEDxSanFrancisco
 
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Diego Guiterrez Zalvidar shares how after being a successful internet entrepreneur he started the bitcoin community in Latin America with the purpose of using bitcoin and blockchain for good. CEO and Co-Founder of RSK Labs. Entrepreneur, pioneer of web development in Latin America and leader in fostering bitcoin technology in Latin America. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
Views: 623 TEDx Talks
How Bitcoin Mining Work's
 
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What is Bitcoin https://www.youtube.com/watch?v=WDvskHePAXU How to Mine Bitcoin https://www.youtube.com/watch?v=79KEJf4qmps How Bitcoin Mining Works Bitcoin Mining Works by Making a hash of it You can also watch my other video on Home to Mine Bitcoins ( Link is in Description ) This general ledger is a long list of blocks, known as the 'blockchain'. It can be used to explore any transaction made between any bitcoin addresses, at any point on the network. Whenever a new block of transactions is created, it is added to the blockchain, creating an increasingly lengthy list of all the transactions that ever took place on the bitcoin network. A constantly updated copy of the block is given to everyone who participates, so that they know what is going on. When a block of transactions is created, miners put it through a process. They take the information in the block, and apply a mathematical formula to it, turning it into something else. That something else is a far shorter, seemingly random sequence of letters and numbers known as a hash. This hash is stored along with the block, at the end of the blockchain at that point in time. Hashes have some interesting properties. It’s easy to produce a hash from a collection of data like a bitcoin block, but it’s practically impossible to work out what the data was just by looking at the hash. And while it is very easy to produce a hash from a large amount of data, each hash is unique. If you change just one character in a bitcoin block, its hash will change completely. Miners don’t just use the transactions in a block to generate a hash. Some other pieces of data are used too. One of these pieces of data is the hash of the last block stored in the blockchain. Because each block’s hash is produced using the hash of the block before it, it becomes a digital version of a wax seal. It confirms that this block – and every block after it – is legitimate, because if you tampered with it, everyone would know. If you tried to fake a transaction by changing a block that had already been stored in the blockchain, that block’s hash would change. If someone checked the block’s authenticity by running the hashing function on it, they’d find that the hash was different from the one already stored along with that block in the blockchain. The block would be instantly spotted as a fake. Because each block’s hash is used to help produce the hash of the next block in the chain, tampering with a block would also make the subsequent block’s hash wrong too. That would continue all the way down the chain, throwing everything out of whack. Competing for coins Butterfly Labs Bitforce mining rigSo, that’s how miners ‘seal off’ a block. They all compete with each other to do this, using software written specifically to mine blocks. Every time someone successfully creates a hash, they get a reward of 25 bitcoins, the blockchain is updated, and everyone on the network hears about it. That’s the incentive to keep mining, and keep the transactions working. The problem is that it’s very easy to produce a hash from a collection of data. Computers are really good at this. The bitcoin network has to make it more difficult, otherwise everyone would be hashing hundreds of transaction blocks each second, and all of the bitcoins would be mined in minutes. The bitcoin protocol deliberately makes it more difficult, by introducing something called ‘proof of work’. The bitcoin protocol won’t just accept any old hash. It demands that a block’s hash has to look a certain way; it must have a certain number of zeroes at the start. There’s no way of telling what a hash is going to look like before you produce it, and as soon as you include a new piece of data in the mix, the hash will be totally different. Miners aren’t supposed to meddle with the transaction data in a block, but they must change the data they’re using to create a different hash. They do this using another, random piece of data called a ‘nonce’. This is used with the transaction data to create a hash. If the hash doesn’t fit the required format, the nonce is changed, and the whole thing is hashed again. It can take many attempts to find a nonce that works, and all the miners in the network are trying to do it at the same time. That’s how miners earn their bitcoins. Please like share and comment on our Video For more videos Subscribe our Channel Also Follow us on Facebook : https://www.facebook.com/Tech.Solution001 Google+ : https://plus.google.com/113358335751493798275 Twitter : Instagram : Our Website Address : Subscribe our channel for more Videos
Views: 25 Tech Land
Bitcoin ke unconfirmed transaction confirm  kaise kare !!
 
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blockchain.info/pushtx https://blockchain.info/tx/3db1e8d36e6a070cc33f6f4c034a816ed92e50cef41f2e172e2cd173a2963db7?format=hex https://live.blockcypher.com/btc/pushtx/ https://pool.viabtc.com/tools/BTC/broadcast/
Views: 175 ONLINE SUPPORT
BlockChain Crypto Currency, Bitcoin / Z Cash, Ethereum, Litecoin
 
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BlockChain Crypto Currency, Bitcoin / Z Cash, Ethereum, Litecoin A blockchain facilitates secure online transactions. A blockchain is a decentralized and distributed digital ledger that is used to record transactions across many computers so that the record cannot be altered retroactively without the alteration of all subsequent blocks and the collusion of the network. This allows the participants to verify and audit transactions inexpensively. They are authenticated by mass collaboration powered by collective self-interests.[33] The result is a robust workflow where participants' uncertainty regarding data security is marginal. The use of a blockchain removes the characteristic of infinite reproducibility from a digital asset. It confirms that each unit of value was transferred only once, solving the long-standing problem of double spending. Blockchains have been described as a value-exchange protocol. This blockchain-based exchange of value can be completed more quickly, more safely and more cheaply than with traditional systems. A blockchain can assign title rights because it provides a record that compels offer and acceptance. A blockchain database consists of two kinds of records: transactions and blocks.Blocks hold batches of valid transactions that are hashed and encoded into a Merkle tree.[1] Each block includes the hash of the prior block in the blockchain, linking the two. Variants of this format were used previously, for example in Git. The format is not by itself sufficient to qualify as a blockchain. The linked blocks form a chain.[1] This iterative process confirms the integrity of the previous block, all the way back to the original genesis block. Some blockchains create a new block as frequently as every five seconds. As blockchains age they are said to grow in height. Produced by Shawn Kober a Big Planet Media Production contact us at www.bigplanetmedia.com 660-864-3423
Views: 139 Big Planet Media
Blockchain 101 Ep 04 - The Birth of the first Bitcoin!
 
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The Birth of the first Bitcoin! The big day came on January 4th 2009, 3 months after the publication of Bitcoin White Paper. Satoshi Nakamoto, Bitcoin whitepaper author, produced the first block of Bitcoin , “The Genesis Block”, on a small server located in Helsinki, Finland. For that, Satoshi Nakamoto obtained the first 50 Bitcoins as the reward. To commemorate the birth of Bitcoin, Mr. Nakamoto put that day’s headline of The Times article about a possible bailout for banks in the UK into the first block. Mr. Nakamoto did that to authenticate the time of Bitcoin's birth. What a brilliant mind! Huobi Pro will post a question in our Tweet via our Twitter account each time we put up an episode of Blockchain 101 post on our Twitter account, first 20 people who answered in the format [UIDxxxxxxxx, correct answer] and retweet our post will be entitled to 1 HT each. Note that the UID entered MUST be a valid Huobi registered account. Eligible winners from each episode will be awarded with HT which will be deposited into your Huobi Pro account on the following Tuesday. What are you waiting for? Fastest fingers first! Grab your HT now! Official Twitter account: https://twitter.com/Huobi_Pro
Views: 1551 Huobi Global
Le bitcoin et la block chain (Master Class) Livre Audio Gratuit
 
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Obtenez un livre audio complet de votre choix, légalement et sans frais : http://rven.space/11/b07655tk1w Format: Original Recording Auteur: Gabriel Jarrosson Date de publication: 10/6/2017 Durée: 46 mins Langue: Français Genre: nonfiction, politics Résumé: Dans cette formation vous allez apprendre : Key takeaways : Présentation du Cours : Le bitcoin met en question une pratique ancestrale qui voulait que l'émission de la monnaie fusse un prérogative de l'État. Jusqu'à la création du bitcoin en 2009, les monnaies privées n'avaient ni notoriété ni perspective. L'apparition du bitcoin et des autres crypto-monnaies a été rendu possible par une technologie nouvelle : la blockchain. Comment "marche" le bitcoin ? Que peut-il devenir ? Que va-t-il changer dans nos vies ? S'agit-il d'une vraie révolution ou d'une simple vaguelette sur l'océan de la spéculation ? Autant de questions émergentes sur lesquelles Gabriel Jarrosson vous donne les éléments pour vous forger une opinion. À propos de l'auteur : Gabriel Jarrosson Gabriel Jarrosson vend son premier site internet à l'âge de 13 ans. En 2011, en école d'ingénieur, il crée sa première société dont il s'occupe pendant les cours. Contactez-moi pour toute question: [email protected]
Bitcoin: Confirming the Genesis Block
 
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A little bit different of a video today. A lot of people have been talking about cryptocurrencies this year so I figured I would make a video about how the blockchain works for bitcoin. For anyone interested in the code, here is the repo: https://github.com/ImportMathRepositories/Bitcoin_Block_Confirmation If you're curious where you can find realtime blockchain data, this is a pretty good resource: https://blockexplorer.com/ If you have any questions, feel free to leave a comment. If you enjoyed the video, don't forget to like, share, and subscribe!
Views: 901 Import Math
Blockchain: Más allá del bitcoin | José Juan Mora | TEDxSevilla
 
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Exposición que explica los motivos por los que blockchain será el protocolo que dominará las comunicaciones comerciales del futuro así como su origen a partir de las implementaciones de bitcoin y otras monedas virtuales. Socio de Kolokium, una de las primeras empresas españolas dedicadas al desarrollo de aplicaciones en torno a Blockchain. Tengo la enorme fortuna de haber estado los últimos 15 años trabajando en mi hobby, las tecnologías relacionadas con los sistemas de información. De mi pasión por la tecnología y mi afición a la escritura nacieron mis dos libros "Capacity Planning IT: Una aproximación práctica" y "DevOps y el camino de baldosas amarillas". Soy un convencido de que lo realmente importante de la tecnología son las personas y me esfuerzo cada día en promover esta visión antropocéntrica de la tecnología. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx
Views: 239038 TEDx Talks
Bitcoin for consumers today | Paul Hickey | TEDxCincinnati
 
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Bitcoin - finally, a non-technical description of what Bitcoin is and several surprising illustrations on how consumers can use Bitcoin today and in the future. Paul demonstrated to the TEDxCincinnati Audience the simplicity of Bitcoin. @hickeycapital Facebook: Paul Hickey After 10 years as the founding partner at HF Capital, an investment bank that raises money for fast growth companies, Paul Hickey took a sabbatical to become the Co-Founder/CEO of Greenbit.co, a Bitcoin technology company. Prior to HF Cap he was the CEO of Shera Technologies a Shanghai based banking technology co and the Founder/CEO of Q Comm, a transaction technology company he took public on the AMEX. Mr. Hickey is an active impact investor in companies that make a positive social impact on the planet. Oh yea, he also just bought an island off the tip of Borneo (Maliangin Island) which he plans to develop as the worlds greenest and first 100% renewable energy island (mycoralvillas.com). This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx
Views: 51263 TEDx Talks
Bitcoin NodeJS - A simple way to embed data into the blockchain with OP_RETURN using Bitcore
 
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This tutorial is a step-by-step guide on how to execute an OP_RETURN transaction in order to insert data into the Bitcoin Blockhain. This video uses the Bitcore library by Bitpay and NodeJS. https://nodejs.org https://bitcore.io
Views: 3221 m1xolyd1an
Bitcoin Q&A: What is Segregated Witness?
 
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What is Segregated Witness (SegWit)? How do you know you’re using SegWit? SegWit fixes transaction malleability and enables further upgrades towards Bitcoin smart contracts. Can transaction malleability lead to denial-of-service (DoS) attacks? Does SegWit put witness data in a different block? Did SegWit change transaction validation? versus? Are there any security risks of invalid blocks? CORRECTION: At ~2:07, I stated the incorrect BIP number for the Bech32 address format, which should be BIP173. BIP176 is about "bits" denomination. https://github.com/bitcoin/bips/blob/master/bip-0173.mediawiki More on SegWit: https://bitcoincore.org/en/2016/01/26/segwit-benefits/ These questions are from the MOOC 9.3 and 9.5 sessions which took place on March 2nd and March 16th, 2018 respectively. Andreas is a teaching fellow with the University of Nicosia. The first course in their Master of Science in Digital Currency degree, DFIN-511: Introduction to Digital Currencies, is offered for free as an open enrollment MOOC course to anyone interested in learning about the fundamental principles. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop RELATED: The Lightning Network - https://www.youtube.com/playlist?list=PLPQwGV1aLnTurL4wU_y3jOhBi9rrpsYyi SegWit adoption - https://youtu.be/KCsTVTRk6I4 Advanced Bitcoin Scripting Part 1: Transactions and Multi-sig - https://youtu.be/8FeAXjkmDcQ Advanced Bitcoin Scripting Part 2: SegWit, Consensus, and Trustware - https://youtu.be/pQbeBduVQ4I How do I choose a wallet? - https://youtu.be/tN6b62sEpsY Hot vs. cold wallets - https://youtu.be/Aji_E9sw0AE SegWit adoption - https://youtu.be/KCsTVTRk6I4 Secure, tiered storage system - https://youtu.be/uYIVuZgN95M Decentralised exchanges and counterparty risk - https://youtu.be/hi_jaw0dT9M Decentralised exchanges with fiat - https://youtu.be/3Url8tbQEkA How do I secure my bitcoin? - https://youtu.be/vt-zXEsJ61U How do mnemonic seeds work? - https://youtu.be/wWCIQFNf_8g HODLing and the "get free" scheme - https://youtu.be/MhOwmsW1YNI How to get people to care about security - https://youtu.be/Ji1lS9NMz1E Bitcoin as everyday currency - https://youtu.be/xYvvSV4mjH0 Irreversibility and consumer protection - https://youtu.be/R107YWu5XzU Hyperbitcoinization - https://youtu.be/AB5MU5fXKfo Job opportunities with cryptocurrencies - https://youtu.be/89_p4pDlQtI How long until mainstream adoption? - https://youtu.be/y3cKBDBabtA What is the biggest adoption hurdle? - https://youtu.be/jHgyHF3F2TI Andreas M. Antonopoulos is a technologist and serial entrepreneur who has become one of the most well-known and respected figures in bitcoin. Follow on Twitter: @aantonop https://twitter.com/aantonop Website: https://antonopoulos.com/ He is the author of two books: “Mastering Bitcoin,” published by O’Reilly Media and considered the best technical guide to bitcoin; “The Internet of Money,” a book about why bitcoin matters. THE INTERNET OF MONEY, v1: https://www.amazon.co.uk/Internet-Money-collection-Andreas-Antonopoulos/dp/1537000454/ref=asap_bc?ie=UTF8 [NEW] THE INTERNET OF MONEY, v2: https://www.amazon.com/Internet-Money-Andreas-M-Antonopoulos/dp/194791006X/ref=asap_bc?ie=UTF8 MASTERING BITCOIN: https://www.amazon.co.uk/Mastering-Bitcoin-Unlocking-Digital-Cryptocurrencies/dp/1449374042 [NEW] MASTERING BITCOIN, 2nd Edition: https://www.amazon.com/Mastering-Bitcoin-Programming-Open-Blockchain/dp/1491954388 Subscribe to the channel to learn more about Bitcoin & open blockchains! Music: "Unbounded" by Orfan (https://www.facebook.com/Orfan/) Outro Graphics: Phneep (http://www.phneep.com/) Outro Art: Rock Barcellos (http://www.rockincomics.com.br/)
Views: 11998 aantonop
BitCoin কী ? সম্পূর্ণ Detail Video | Block Chain | Mining & Miners | Future of Bitcoins ? TB
 
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নমস্কার বন্ধুরা, আজ আমরা এই Video -র মাধ্যমে জানব BitCoin সম্পকে। Bitcoin in detail, bitcoin mining in india, bitcoin explaination, bitcoin in bengali, bitcoin miner, bitcoin Cash, bitcoin trading. ● LIKE ● ---- ● SHARE ● ---- ● SUBSCRIBE ● ◄ Subscribe (এটা Free)► https://goo.gl/uq4Gbn -------------------------------------------------------- ► Tech রহস্য -র Video প্রতি শনিবার 9pm (Saturday) - https://www.youtube.com/playlist?list=PLgga8_qY4fkP1eQJ1WU7Tmk-ufwJZTlWJ ► Top 5 Videos (Tech রহস্য) - ● [Tech রহস্য - #5] - Hacking and Hackers কি বা কারা ? - https://www.youtube.com/edit?o=U&video_id=UQ0hTmriKa8 ● [Tech রহস্য - #4] - "Aliens" কি সত্যিই আাছে ? Video Proof - https://www.youtube.com/edit?o=U&video_id=UQ0hTmriKa8 ● [Tech রহস্য - #3] - Internet -এর কিছু অজানা রহস্য | - https://www.youtube.com/edit?o=U&video_id=MzbxcohUNcw ● [Tech রহস্য - #2] - সত্যিই কি ভূত আছে নাকি নেই | Ghost ? - https://www.youtube.com/edit?o=U&video_id=sWOkzX3glhU ● [Tech রহস্য - #1] - ভগবান কি সত্যিই আছে না নেই | God ? - https://www.youtube.com/edit?o=U&video_id=UQ0hTmriKa8 --------------------------------------------------------- ► Follow Me ► --------------------------------------------------------- ● Facebook - https://www.facebook.com/TechnicalBondhu/ ● Twitter - https://twitter.com/TechnicalBondhu ● G+ - https://goo.gl/9kbZBq ----------------------------------------------------------
Views: 318 Technical Bondhu
Transactions - Breaking Down Bitcoin Ep. 5
 
01:05:35
Transactions - Breaking Down Bitcoin Ep. 5 Blockchain Reader http://srv2.yogh.io/ 4 hex dump add this to a blockchain.info transaction's URL "?format=hex" http://bitcoinfees.21.co/ The fee estimation data can be retrieved via a simple HTTP REST API, at https://bitcoinfees.21.co/api/v1/fees/recommended. For example, on the command line using the curl command: Using the fee estimation API $ curl https://bitcoinfees.21.co/api/v1/fees/recommended {"fastestFee":80,"halfHourFee":80,"hourFee":60} Donate if you feel like it ! (fees are lower on the weekends, and when sending from a Segwit address) BTC: 34T8P89oMK1Nm7eGrSWmMWhLWvAbPdiBvT
Bitcoin- A quest for better money | Sathvik Vishwanath | TEDxBITBangalore
 
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In a world of traders, businessmen and billionaires, the arrival of Cryptocurrency was ridiculed as a fad among many. With the passage of time the growth of Bitcoins has seen no bounds and is advancing to be the big change in the world of finance and commerce. Sathvik Vishwanath, the founder of Unocoin talks about the journey of Bitcoin and its impact on the trading and commerce scene on the planet and where the future of Bitcoin is headed. The CEO and Co-founder of Unocoin, Sathvik Vishwanath is a bitcoin and block chain entrepreneur. He is on a mission to make bitcoin, the world's first open-source decentralized digital currency. He spear headed the venture that emerged to be India's first entrant into the bitcoin space. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
Views: 957 TEDx Talks
How Bitcoin works - Programmer explains
 
39:55
What is Bitcoin and how does Bitcoin actually work? What is the Blockchain and how does it relate to Bitcoin? What are the usecases of Bitcoin and why is it so valuable? Why is the Bitcoin price so volatile and what is the future of Bitcoin? These and many more questions are answered in this video. The format is such that my good friend Oscar who knows very little about Bitcoin asks me questions about Bitcoin, questions he has been thinking of himself when he heard about Bitcoin on the television, in the media, online, on social networks, from friends etc. The reason why I think this format is beneficial is because many new people to this space are probably are asking the same questions. This video will help with your understanding Bitcoin Let me know what you think guys? FIND OSCAR 💝👬 https://www.youtube.com/user/oscaralsing www.oscaralsing.com JOIN MY EXCLUSIBE MAILING LIST FOR EVEN MORE BLOCKCHAIN KNOWLEDGE: http://eepurl.com/c0hyc9 ESSENTIAL CRYPTO RESOURCES Hardware wallets: ♥ TREZOR https://trezor.io ♥ LEDGER NANO S https://www.ledgerwallet.com/r/4607 ♥ Coinbase https://www.coinbase.com/join/529bab0ab08ded7080000019 JOIN SLACK COMMUNITY http://slack-invite-ivan-on-tech.herokuapp.com https://steemit.com/@ivanli
Views: 9152 Ivan on Tech

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